Answer
$ 3 $
Work Step by Step
$ \frac{f(x)-f(1)}{x-1} $
$ \frac{(3x-1)-(3\times 1 -1)}{x-1} $
$ \frac{(3x-1)-2}{x-1} $
$ \frac{3x-3}{x-1} $
$ \frac{3(x-1)}{x-1} $
$ 3 $
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